// Copyright 2017 AMIS Technologies
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package test

import (
	"fmt"
	"time"
)

func retry(attempts int, delay time.Duration, callback func() error) (err error) {
	for i := 0; i < attempts || attempts < 0; i++ {
		err = callback()
		if err == nil {
			return nil
		}

		<-time.After(delay)
	}

	return fmt.Errorf("after %d attempts, error: %v", attempts, err)
}
